/usr/share/help/sr@latin/gnome-sudoku/bug-filing.page is in gnome-sudoku 1:3.18.2-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/help/sr@latin/gnome-sudoku/../../../help-langpack/sr@latin/gnome-sudoku/bug-filing.page